A hard disk contains four Platters. Each side of the platter is coated with a magnetic oxide, allowing data to be stored on it. The platters are 3.5 inches in diameter. If the hard disk has a capacity of 800 GB and 80% of the platter surface is used for data storage, what is the bit density per square inch?
Since the hard disk contains four platters and each side of the platter is used for storing data on it, we have in total (4*2), that is, 8 platter side surfaces to store the data.
As the platters are 3.5 inches in diameter, surface area of one side of the platter = (22/7)*(3.5*3.5)/4 [Using ...
Step by step computations shown along with explanation.